Telephone



(No Model.)

J. H. FREETO.

TELEPHONE. No. 321,960. Patented July 14, 1885.

U H T N. PETERS, PhMwLHhcgrapher. Washinglcn, D. c.

UNITED STATES PATEsT OFFICE.

JAMES H. FREETO, MEOHANICSBURG, ILLINOIS.

TELEPHONE.

SPECIFICATION fcrming part of Letters Patent No. 321,960, dated July 14-, 1885.

(No model.)

To aZZ whom it may concern:

Be it known that I, JAMEs H. Fnnnro, a citizen of the United States, residing at Mechanicsburg, in the county of Sangamon and State of Illinois, have invented a new and useful Telephone, of which the following is a specification.

My invention relates to improvements in telephones commonly used by means of a tight wire stretched between two of them, there being but two telephones used over one wire; and the objects of my improvements are, first, to obtain a more distinctlyspeaking telephone than ordinarily obtained, through a tensiontclephone; second, to provide a mean for calling up a person at the opposite end of the wire more successfully; and, third, to secure a more durable instrument. I attain these objects by'rneans of the apparatus illustrated in the accompanying drawings, in which Figure I is a front View of the telephone, and Fig. 2 a side view of the same. Fig. 3 is a cross-section of the same,showing its construction.

Similar-letters refer to similar parts th roughout the several figures.

The drawings are full size, in which A is a curved receiving-disk, the outer rim of which is curved sharply inward, as shown at a a, Fig. 3, to catch and conduct the sound to the transmitting plate E, within the flattened spherical-shaped condensing-chamberH H H,- which is formed by the metal walls w w w.

The transmittingplate is held in place by means of soft-rubber cushions F F FF, Fig. 3. which pass entirely around the case, thus holding it clear of the metal of the case and giving a freer and more distinct vibration. The telephone wire K passes through the center of E, and is fastened to a button, b, on the opposite side. Between the transmitting-plate E and the button I) is athin rubber cushion, G, which keeps them from coming in contact with each other, and prevents any metallic sound or rattling of the instrument while in use.

The hammer B is used for calling up the speaker at the other end of the wire. It is hung by means of the wire spring S, soldered to the inner side of the case, as shown in Fig. 3, and is operated by the button 0 and the wire passing from it to the hammer-arm of the spring S through the disk A and the tube D. The legs LL hold the instrument clear of the Wall of the roomin which it is used, thetension of the wire K holding it firmly in place.

"he peculiar shape of the case provides a flattened hemispherical-shaped condensing chamber, H H H, on each side of the trans mitting-plate E, the side through which K passes having an opening-half an inch in diameter about the wire, thus giving a free vibration to E, that transmits the sound clearly and distinctly.

I am aware that patents have been issued previously to this application for tension-telephones of similar character to my invention. Therefore I do not claim my invention, broad- 1y; but

WVhat I do claim as new, and desire to secure by Letters Patent, is

The combination of the large curved recei ving-disk A, the flattened hemispherical condensing-chamber H H, the metal transmittingplate E, the rubber cushions F F F F, which hold it in place, the cushion G, between the button I) on the end of the line-wire and the transmitting-plate E, the coil-wire spring S, and hammer B, operated by the button 0, through the tube D in the disk A, all substantially as described, and for the purposes specified.

JAMES H. FREETO.

Witnesses:

S. A. BULLARD, Josnrrr L. CRAFT. 

